<div class="refentry" lang="en" xml:lang="en"><a id="glEnableClientState"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glEnableClientState — enable or disable client-side capability</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glEnableClientState</b>(</code></td><td>GLenum <var class="pdparam">array</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glDisableClientState</b>(</code></td><td>GLenum <var class="pdparam">array</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term">
                    <em class="parameter"><code>array</code></em>
                </span></dt><dd><p>
                    Specifies the capability to enable or disable.
                    Symbolic constants
                    <code class="constant">GL_COLOR_ARRAY</code>,

                    <code class="constant">GL_NORMAL_ARRAY</code>,
                    <code class="constant">GL_POINT_SIZE_ARRAY_OES</code><span>,</span>
                    <code class="constant">GL_TEXTURE_COORD_ARRAY</code>,<span> and</span>
                    <code class="constant">GL_VERTEX_ARRAY</code>

                    are accepted.
                    </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
        <code class="function">glEnableClientState</code> and
        <code class="function">glDisableClientState</code>
        enable or disable individual client-side capabilities. By
        default, all client-side capabilities are disabled. Both
        <code class="function">glEnableClientState</code> and
        <code class="function">glDisableClientState</code>
        take a single argument, <em class="parameter"><code>array</code></em>,
        which can assume one of the following values:</p><div class="variablelist"><dl><dt><span class="term">
                    <code class="constant">GL_COLOR_ARRAY</code>
                </span></dt><dd><p>If enabled, the color array is enabled for writing
                    and used during rendering when
                    <a class="citerefentry" href="glDrawArrays"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>, or
                    <a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a> is called. See
                    <a class="citerefentry" href="glColorPointer"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.</p></dd><dt><span class="term">
                    <code class="constant">GL_NORMAL_ARRAY</code>
                </span></dt><dd><p>If enabled, the normal array is enabled for writing
                    and used during rendering when
                    <a class="citerefentry" href="glDrawArrays"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>, or
                    <a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a> is called. See
                    <a class="citerefentry" href="glNormalPointer"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.</p></dd><dt><span class="term">
                    <code class="constant">GL_POINT_SIZE_ARRAY_OES</code>
                </span></dt><dd><p>
                    If enabled, the point size array controls the sizes used
                    to render points and point sprites. In this case the point
                    size defined by <a class="citerefentry" href="glPointSize"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>
                    is ignored.
                    The point sizes supplied in the point size arrays will be
                    the sizes used to render both points and point sprites.
                    See <a class="citerefentry" href="glPointSize"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>
                    </p></dd><dt><span class="term">
                    <code class="constant">GL_TEXTURE_COORD_ARRAY</code>
                </span></dt><dd><p>If enabled, the texture coordinate array is enabled
                    for writing and used during rendering when
                    <a class="citerefentry" href="glDrawArrays"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>, or
                    <a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a> is called. See
                    <a class="citerefentry" href="glTexCoordPointer"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.</p></dd><dt><span class="term">
                    <code class="constant">GL_VERTEX_ARRAY</code>
                </span></dt><dd><p>If enabled, the vertex array is enabled for writing
                    and used during rendering when
                    <a class="citerefentry" href="glDrawArrays"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>, or
                    <a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a> is called. See
                    <a class="citerefentry" href="glVertexPointer"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.</p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>Enabling and disabling
        <code class="constant">GL_TEXTURE_COORD_ARRAY</code>
        affects the active client texture unit. The active client
        texture unit is controlled with
        <a class="citerefentry" href="glClientActiveTexture"><span class="citerefentry"><span class="refentrytitle">glClientActiveTexture</span></span></a>.</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p><code class="constant">GL_INVALID_ENUM</code> is generated if
        <em class="parameter"><code>array</code></em> is not an accepted value.</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p>
            <a class="citerefentry" href="glIsEnabled"><span class="citerefentry"><span class="refentrytitle">glIsEnabled</span></span></a>
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
        <a class="citerefentry" href="glClientActiveTexture"><span class="citerefentry"><span class="refentrytitle">glClientActiveTexture</span></span></a>,
        <a class="citerefentry" href="glColorPointer"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>,
        <a class="citerefentry" href="glDrawArrays"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>,
        <a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>,
        <a class="citerefentry" href="glEnable"><span class="citerefentry"><span class="refentrytitle">glEnable</span></span></a>,
        <a class="citerefentry" href="glNormalPointer"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>,
        <a class="citerefentry" href="glTexCoordPointer"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>,
        <a class="citerefentry" href="glVertexPointer"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="copyright"></a><h2>Copyright</h2><p>
            Copyright © 2003-2004
            Silicon Graphics, Inc. This document is licensed under the SGI
            Free Software B License. For details, see
            <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.
        </p></div></div>
